This module will most likely be imported by any Haskell program that uses DOM. Other modules from Data.DOM namespace are to be imported as needed, sometimes qualified because there are some name clashes in attributes and methods across the DOM interfaces.

Below is an example of Haskell code which generates Javascript to display traditional Hello World. This example shows that even a simplest Control.Monad.Identity will do. Of course, a more sofisticated Monad might provide more benefits, such as assigning some of expressions to Javascript variables to share and prevent repeated evaluation, automatic declaration of functions, etc.

 module Main where
 import BrownPLT.JavaScript
 import BrownPLT.JavaScript.PrettyPrint
 import Control.Monad
 import Control.Monad.Identity
 import Data.DOM
 import Data.DOM.Dom
 import Data.DOM.Node
 import Data.DOM.HTMLDocument
 main = putStrLn $ show $ stmt $ 
   FunctionStmt undefined (Id undefined "main") [] 
     (ExprStmt undefined $ runIdentity q)
 q = do
   d <- htmlDocument
   t <- mkText (string "Hello World") d
   b <- getm'body d
   addChild t b

Below is Javascript generated by this example. All expressions just nest where necessary, and method calls may be chained.

 
 function main()
 {
 window.document.body.appendChild(window.document.createTextNode("Hello World"));
 }